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SOT23封装、1.8V、纳安级功耗、超摆幅比较器,带或不带电压基准

可理想用于便携设备中的2节电池监控

产品详情

主要特征

Parametric specs for Comparators
tPD (ns) (typ) 22000
VOS (mV) (max) 5
VSUPPLY (Total) (V) (min) 1.8
VSUPPLY (Total) (V) (max) 5.5
# Comparators 1
Input Range Rail to Rail
to Neg. Rail
ICC per Comp. (µA) (max) 0.8
Logic Out Open Drain
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
SOT23/5
Budgetary
Price (See Notes)
0.73
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参量

Parametric specs for Comparators
tPD (ns) (typ) 22000
VOS (mV) (max) 5
VSUPPLY (Total) (V) (min) 1.8
VSUPPLY (Total) (V) (max) 5.5
# Comparators 1
Input Range Rail to Rail
to Neg. Rail
ICC per Comp. (µA) (max) 0.8
Logic Out Open Drain
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
SOT23/5
Budgetary
Price (See Notes)
0.73

主要特征

  • Ultra-Low Supply Current
    • 380nA per Comparator (MAX919/MAX920)
    • 750nA per Comparator with Reference (MAX917/MAX918)
  • Guaranteed to Operate Down to +1.8V
  • Internal 1.245V ±1.5% Reference (MAX917/MAX918)
  • Input Voltage Range Extends 200mV Beyond-the-Rails
  • CMOS Push-Pull Output with ±8mA Drive Capability (MAX917/MAX919)
  • Open-Drain Output Versions Available (MAX918/MAX920)
  • Crowbar-Current-Free Switching
  • Internal Hysteresis for Clean Switching
  • No Phase Reversal for Overdriven Inputs
  • Space-Saving SOT23 Package

应用/用途

  • 2节电池监视/管理
  • 医疗仪器
  • 移动通信
  • 笔记本电脑与PDA
  • 地或电源线检测
  • 遥感勘测与远端系统
  • 门限检测器/鉴别器
  • 超低功耗系统

描述

The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-the-Rails™ inputs and are guaranteed to operate down to +1.8V. The MAX917/MAX918 feature an on-board 1.245V ±1.5% reference and draw an ultra-low supply current of only 750nA, while the MAX919/MAX920 (without reference) require just 380nA of supply current. These features make the MAX917–MAX920 family of comparators ideal for all 2-cell battery applications, including monitoring/management.

The unique design of the output stage limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX917/MAX919 have a push-pull output stage that sinks and sources current. Large internal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX918/MAX920 have an open-drain output stage that makes them suitable for mixed-voltage system design.

简化框图

MAX917、MAX918、MAX919、MAX920:典型工作电路 MAX917、MAX918、MAX919、MAX920:典型工作电路 Zoom icon

Technical Docs

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心